Aviation · AIM 3-2-3 · Class B
Class B airspace requirements for the pilot and aircraft.
Clearance, certificate, radio, transponder and ADS-B Out as the AIM lists them. Check your own setup against the list.
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Clearance first
The AIM (3-2-3) says: "Regardless of weather conditions, an ATC clearance is required prior to operating within Class B airspace." It also tells pilots not to ask for a clearance "unless the requirements of 14 CFR sections 91.131, 91.215, and 91.225 are met."
Pilot certificate
No person may take off or land a civil aircraft at an airport within Class B airspace, or operate a civil aircraft within Class B airspace, unless: the pilot in command holds at least a private pilot certificate; or holds a recreational pilot certificate and has met 14 CFR 61.101; or holds a sport pilot certificate and has met 14 CFR 61.325; or the aircraft is operated by a student pilot who seeks a private pilot certificate and has met 61.95, or who seeks a recreational or sport pilot certificate and has met 61.94. The AIM also lists twelve primary airports where the pilot in command must hold at least a private pilot certificate to take off or land, including Atlanta Hartsfield, Boston Logan, Chicago O'Hare, Dallas/Fort Worth, Los Angeles, Miami, Newark, New York Kennedy, New York La Guardia, Reagan Washington National and San Francisco.
Equipment
Unless otherwise authorized by ATC: for IFR operations, an operable VOR or TACAN receiver or an operable and suitable RNAV system; for all operations, a two-way radio capable of communicating with ATC; and an operable radar beacon transponder with automatic altitude reporting capability and operable ADS-B Out equipment. Large turbine-engine airplanes must operate at or above the designated floors within the lateral limits when going to or from a primary airport.
Mode C veil
Within 30 nautical miles of an airport listed in Appendix D, section 1 of part 91, from the surface up to 10,000 feet MSL, the AIM says aircraft must have an operable transponder with automatic altitude reporting and ADS-B Out unless ATC authorizes otherwise, with a narrow exception for aircraft not originally certificated with an engine-driven electrical system.
Worked example
A private pilot with a two-way radio, transponder with altitude reporting and ADS-B Out has every item the list names. The same pilot with a failed transponder does not; the AIM says a deviation from the altitude-reporting requirement can be authorized by ATC on notification, while a deviation from the transponder requirement must be requested at least one hour before the operation.
Weather minimums for the same airspace are on the Class B VFR weather minimums page.
FAQ
Do I need an ATC clearance to enter Class B?
Yes. The AIM says a clearance is required before operating in Class B regardless of weather conditions.
Can a student pilot fly in Class B?
Yes, if the student meets 61.95 when seeking a private certificate, or 61.94 when seeking a recreational or sport certificate.
What equipment does Class B require?
Per the AIM: a two-way radio, a transponder with automatic altitude reporting and ADS-B Out, unless ATC authorizes otherwise.
What is the Mode C veil?
Airspace within 30 nautical miles of the primary Class B airports listed in Appendix D of part 91, from the surface to 10,000 feet MSL.
How early must I ask for a transponder deviation?
The AIM says at least one hour before the proposed operation.
Sources
Retrieved 2026-11-02. Regulation text read through the eCFR API (current as of 2026-10-29); AIM text read from the FAA publication URL below. Rules change; check the current text.
- AIM chapter 3, section 2, Controlled airspace (3-2-3): Class B operating rules and pilot and equipment requirements.
- 14 CFR 91.155, Basic VFR weather minimums: weather minimums referred to alongside the entry rules.
Not legal advice or flight instruction
This page summarizes federal aviation rules for general information. It is not legal advice or flight instruction and does not replace the regulation, an instructor, or the FAA. Check the current rule and your own certificate privileges before you fly. Everything runs in your browser; nothing you enter is sent anywhere.